Quickly vaccinating billions of people around the globe against Covid-19 is going to be an endeavour like no other in human history. What could make it even more difficult is that some of the leading contenders – mRNA(1) vaccines – have a very short shelf life: They have to be stored and shipped at temperatures as low as -80°C (-112°F).
The private sector, as well as the US military, is trying to figure out how to manage that feat. But there’s another possibility – and it relies on thousands of people playing an online game.